*From [CFD Direct](https://cfd.direct/openfoam/user-guide/v9-standard-solvers/#x13-960003.5)*
# Basic
- laplacianFoam
- potentialFoam
- scalarTransportFoam
# Incompressible
## Steady-State
- adjointShapeOptimizationFoam
- boundaryFoam
- simpleFoam
- [[SIMPLE Algorithm]]
- porousSimpleFoam
- SRFSimpleFoam
## Transient
- icoFoam
- nonNewtonianIcoFoam
- pimpleFoam
- [[PIMPLE Algorithm]]
- SRFPimpleFoam
- pisoFoam
- [[PISO Algorithm]]
- shallowWaterFoam
# Compressible
- rhoCentralFoam
- rhoPimpleFoam
- rhoPorousSimpleFoam
- rhoSimpleFoam
# Multiphase
## Incompressible
- driftFluxFoam
- interFoam
- multiphaseInterFoam
- interMixingFoam
- multiphaseEulerFoam
- potentialFreeSurfaceFoam
- twoLiquidMixingFoam
# Direct Numerical Simulation (DNS)
- dnsFoam
# Combustion
- buoyantReactingFoam
- chemFoam
- coldEngineFoam
- engineFoam
- PDRFoam
- reactingFoam
- XIEngineFoam
- XiFoam
# Heat Transfer / Buoyancy-Driven
- buoyantPimpleFoam
- buoyantSimpleFoam
- chtMultiRegionFoam
- thermoFoam
# Particle-Tracking
- denseParticleFoam
- particleFoam
- rhoParticleFoamf
# Discrete Methods
- dsmcFoam
- mdEquilibrationFoam
- mdFoam
# Electromagnetics
- electrostaticFoam
- magneticFoam
- mhdFoam
# Stress Analysis of Solids
- solidDisplacementFoam
- solidEquilibriumDisplacementFoam